How to find out how over provisioned our storage is?

[aaronr]

Does anyone know how to easily find out how over provisioned a vmfs volume is? We are using only ESXi 4 with a mix of thick and thin vmdk files. Some are on local storage, some are on a FC SAN.

Using the vSphere Client I looked at the available disk space for a datastore and then also used vmkfstools -P on my vMA box and got the same results. I am assuming the available space being reported does not take into account the not-fully-allocated thin vmdk files.

Thoughts?

- Aaron

[matthiaseisner]

Hi Aaron!

U can define an alarm which is called "datastore overallocation". This trigger is defined in percent and so u can monitor your overallocation rate but I guess it's only working if u have a vCenter server.

I hope this helps.

Best Regards

Matthias

[depping]

there are alarms for this indeed, but isn't this part of one of the storage views in vCenter? Don't have access to my test environment at the moment but I am pretty certain it is.

Duncan

VMware Communities User Moderator | VCP | VCDX

-

---

Now available: <a href="http://www.amazon.com/gp/product/1439263450?ie=UTF8&tag=yellowbricks-20&linkCode=as2&camp=1789&creative=9325&creativeASIN=1439263450">Paper - vSphere 4.0 Quick Start Guide (via amazon.com)</a> | <a href="http://www.lulu.com/product/download/vsphere-40-quick-start-guide/6169778">PDF (via lulu.com)</a>

Blogging: http://www.yellow-bricks.com | Twitter: http://www.twitter.com/DuncanYB

[matthiaseisner]

Hi Duncan!

I have the same problem, no access to the test environment but I don't think that this information is available in the storage views. Storage views are pretty cool to get storage information about VM's.

Best Regards

Matthias

[aaronr]

We do have a few vCenters setup in various locations.

Ideally I could get the provisioned space via a remote cli command because we are using nagios/cacti to monitor these. I have check_esx3 setup and have a lot of monitoring points (including free disk space). Ideally I could get one for provisioned space, too. Oh, we also have a vMA setup that I could use.

So, here is what I see via the vSphere Client attached to our vCenter:

Here's what I see using the vmkfstools remotely:

Notice that it shows capacity and free space, but not provisioned space

Thanks,

Aaron

[joshuatownsend]

LucD's yadr vdisk reporter script may help: http://lucd.info/?p=1935

If you found this or other information useful, please consider awarding points for "Correct" or "Helpful".

Please visit http://vmtoday.com for News, Views and Virtualization How-To's

Follow me on Twitter - @joshuatownsend